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P2812 2016 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit Open

Quick Answer

The P2812 diagnostic trouble code for a 2016 GMC Sierra indicates a Transmission Control Solenoid Valve 7 Control Circuit Open. Common causes include Faulty transmission control solenoid valve 7, Damaged or corroded wiring/connectors in the circuit, Issues with the transmission control module (TCM). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2812 2016 GMC Sierra indicates Transmission Control Solenoid Valve 7 Control Circuit Open.
Common causes
Common causes include Faulty transmission control solenoid valve 7, Damaged or corroded wiring/connectors in the circuit, Issues with the transmission control module (TCM).
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P2812 2016 GMC Sierra Description

The P2812 diagnostic trouble code for a 2016 GMC Sierra indicates a Transmission Control Solenoid Valve 7 Control Circuit Open. This means that there is an issue with the electrical circuit that controls the transmission control solenoid valve 7. The transmission control solenoid valves are responsible for regulating the flow of transmission fluid within the transmission and play a crucial role in shifting gears. When the control circuit for solenoid valve 7 is open, it means that there is a break or interruption in the electrical connection that controls the valve's operation.

OBDII Code P2812 2016 GMC Sierra - Transmission Control Solenoid Valve 7 Control Circuit Open
P2812 2016 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit Open

Common Causes of P2812 2016 GMC Sierra

  1. Faulty transmission control solenoid valve 7
  2. Damaged or corroded wiring/connectors in the circuit
  3. Issues with the transmission control module (TCM)
  4. Electrical system malfunctions
  5. Poor maintenance or fluid contamination in the transmission

Symptoms of P2812 2016 GMC Sierra

  1. Rough or erratic shifting
  2. Delayed or prolonged shifting between gears
  3. Transmission slipping
  4. Erratic engine revving
  5. Illumination of the Check Engine Light

How to Fix P2812 2016 GMC Sierra

  1. Diagnose the issue: Use a diagnostic scan tool to confirm the P2812 code and pinpoint the exact cause of the transmission control solenoid valve 7 circuit open.
  2. Inspect wiring/connectors: Check for any damaged, corroded, or loose wiring or connectors in the circuit and repair or replace as necessary.
  3. Test solenoid valve: Test the transmission control solenoid valve 7 to determine if it is functioning properly. Replace the valve if it is faulty.
  4. Check TCM: Inspect the transmission control module for any issues or malfunctions. Repair or replace the TCM if necessary.
  5. Clear codes and test: Clear the diagnostic trouble codes, reset the vehicle's computer, and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P2812 2016 GMC Sierra

The typical repair costs for addressing a Transmission Control Solenoid Valve 7 Control Circuit Open issue can vary depending on the extent of the problem and the specific components that need to be replaced. In general, the cost of replacing a transmission control solenoid valve can range from $150 to $400, including parts and labor. However, additional costs may be incurred if there are wiring or TCM issues that need to be addressed. Labor rates at auto repair shops can vary between $80 and $150 per hour, so it's recommended to obtain estimates from local shops for a more accurate cost assessment.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2812 2016 GMC Sierra Code

1. What does OBDII code P2812 mean on a 2016 GMC Sierra?

Code P2812 indicates an open circuit in the transmission control solenoid valve 7 control circuit, which affects the transmission's ability to manage gear shifting properly.

2. What are the common symptoms of code P2812 in a GMC Sierra?

Symptoms include erratic or delayed shifting, the transmission stuck in one gear, reduced fuel efficiency, and the check engine light being illuminated.

3. What causes the P2812 code to appear?

Common causes include faulty transmission control solenoid 7, damaged or corroded wiring, a poor electrical connection in the circuit, or a malfunctioning transmission control module (TCM).

4. Can I drive my 2016 GMC Sierra with a P2812 code?

Driving with a P2812 code is not recommended, as it may cause further damage to the transmission and lead to unsafe driving conditions due to improper gear shifting.

5. How do I diagnose the P2812 code in my vehicle?

Start by inspecting the wiring and connectors associated with solenoid 7 for damage or corrosion. Then test the solenoid and circuit for continuity using a multimeter. A scan tool may also be used to monitor transmission data.

6. How is the P2812 code fixed?

Repairs may involve replacing the faulty solenoid, repairing or replacing damaged wiring, cleaning corroded connectors, or, in rare cases, replacing the transmission control module.

7. What tools are needed to troubleshoot the P2812 code?

Basic tools include a multimeter for testing electrical connections and a scan tool or OBDII code reader to clear the code and monitor live transmission data.

8. How much does it cost to repair the P2812 code on a GMC Sierra?

Repair costs vary based on the issue but can range from $150 to $500 for solenoid replacement, while wiring repairs or TCM replacement may cost more.

9. Can a dirty or low transmission fluid cause the P2812 code?

While it’s not a direct cause, dirty or low transmission fluid can contribute to solenoid issues, so checking and replacing the fluid may help prevent further problems.

10. Is the P2812 code specific to GMC Sierra trucks?

No, the P2812 code can appear on other vehicles with similar transmission systems, but the specific diagnosis and repair steps may vary by make and model.

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